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ScholarsArchive at Oregon State University
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The dynamics of the growth of linear disturbances
to a chaotic basic state is analyzed in an asymptotic model of
weakly nonlinear, baroclinic wave-mean interaction. In this
model, an ordinary differential equation for the wave amplitude
is coupled...
2001 (iso8601)
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We review several approaches that have been used to
estimate ocean surface gravity wavenumbers from wave-resolving
remotely sensed image sequences. Two fundamentally different
approaches that utilize these data exist. A power spectral density...
2008-09 (iso8601)
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This article was originally published online and in print with an incorrect version of Fig. 1. AIP apologizes for this error.
All online versions of the article have been corrected.
2008-03-03 (iso8601)
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A laboratory experiment involving rip currents generated on a barred beach with
periodic rip channels indicates that rip currents contain energetic low-frequency oscillations
in the presence of steady wave forcing. An analytic model for the...
2001-04 (iso8601)
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We propose alternative mechanisms for the origin of three unusual rock suites, high-Mg andesites, NaTi basalts, and arclike rocks, that have been dredged from the Woodlark basin, southwest Pacific Ocean. We show that the high-Mg andesites and NaTi...
1986-12 (iso8601)
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1969-06-30 (iso8601)
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The Moderate Resolution Imaging Spectroradiometer
(MODIS) will add a significant new capability for investigating
the 70% of the earth’s surface that is covered by
oceans, in addition to contributing to the continuation of a
decadal scale time...
1998-07-04 (iso8601)
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River Influences on Shelf Ecosystems (RISE) is the first comprehensive
interdisciplinary study of the rates and dynamics governing the mixing of river and coastal
waters in an eastern boundary current system, as well as the effects of the...
2010-02-03 (iso8601)
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An internal partly standing wave in Mamala Bay, Hawaii
is studied using new observations and the Princeton Ocean
Model (POM). Previous work suggested a convergence in
the bay of east- and westbound waves emanating from
Kaena Ridge and Makapuu...
2007-09-07 (iso8601)
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Observations of currents, hydrography, and turbulence provide unambiguous evidence for hydraulic control of flow over an isolated three-dimensional topographic feature on Oregon’s continental shelf. The flow becomes critical at the crest of the...
2001-03-15 (iso8601)
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Two deep ocean hotspots of turbulent mixing were found
over the Oregon continental slope. Thorpe-scale analyses
indicate time-averaged turbulent energy dissipation rates of
ε > 10⁻⁷ W/kg and eddy diffusivities of Kp ~ 10⁻² m²/s at
both hotspots....
2007-01-09 (iso8601)
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The initial composition of a river plume depends on the cumulative turbulent
entrainment within the estuary and how this dilutes the supplied freshwater. Here we
examine the relative roles of turbulence and freshwater input using observations from...
2009-08-14 (iso8601)
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Measurements of suspended sediment concentration, velocity, salinity, and turbulent
microscale shear in the near-field region of the Columbia River plume are used to investigate
the mechanisms of sediment resuspension and entrainment into the...
2009-11-24 (iso8601)
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Austral winter oceanographic measurements from the
northwest Australian continental shelf reveal salty water
forming evaporatively inshore, moving across the wide
shelf near the bottom and into the adjacent open ocean when
the shelf edge...
2006-01-14 (iso8601)
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Shelf break conditions and alongshore flow off northwestern Australia are studied
during the strongly evaporative conditions of austral winter 2003. Present results,
along with those of previous authors, confirm that a poleward, fresh Leeuwin...
2007-05-05 (iso8601)
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Current and hydrographic observations from the Coastal Mixing and Optics
experiment moored array, deployed from August 1996 through June 1997, are used to
describe the velocity variability and evaluate the dynamics of circulation over the New...
2003-08-29 (iso8601)
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Observations from the Coastal Mixing and Optics (CMO) moored array (deployed
from August 1996 through June 1997) and supplemental moored observations are used to
describe near-inertial current variability over the New England shelf. Near-inertial...
2005-02-17 (iso8601)
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Observations from the Coastal Mixing and Optics experiment moored array, deployed
from August 1996 through June 1997, are used to describe barotropic and baroclinic
tidal variability over the New England shelf. The dominant M₂ tidal elevations...
2004-06-04 (iso8601)
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We present molybdenum isotope and concentration data from 14 sites in the eastern Pacific from the
central California to the Peru margin. The environments studied have been chosen to represent a broad
range in oxidation-reduction (redox)...
2009-06-18 (iso8601)
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Diatom remains indicate the oceanic Ge/Si ratio (μmol/mol) has varied temporally, ranging from Miocene
values of 0.9 to Last Glacial Maximum (LGM) values of 0.55, with the present value of 0.69. These ratios lie
between those for the primary...
2004-05-18 (iso8601)
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Isotopic analyses of dissolved molybdenum are presented for sediment pore waters from a reducing
sedimentary basin and for fluids from a low-temperature ridge flank hydrothermal system. δ⁹⁸/⁹⁵Mo in
these fluids range from 0.8 to 3.5%₀ (relative to...
2002-12-19 (iso8601)
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Subsurface hydrothermal activity dominates the heat and salt budgets of the deep water column in Crater Lake, Oregon. From a time series of conductivity-temperature-depth data and data from a thermistor chain mooring, we estimate that the net...
1993-10-15 (iso8601)
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Benthic incubation chambers have been deployed in a variety of geochemical environments that provide a comprehensive geochemical framework from which to address issues related to Ba geochemistry and the use of Ba as a paleoproxy. First order...
1999-02 (iso8601)
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We present concentrations of germanium and silicon in sediment pore waters, basaltic formation fluids,
and bulk sediment from three ridge flank hydrothermal systems (RFHS). Basaltic formation fluids from
warm (>30°C) RFHS have much higher Ge...
2008-03-27 (iso8601)
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We present a new estimate for the crustal phosphorous
sink that results from reactions among seawater, basalt, and
sediment blanketing low temperature mid-ocean ridge flank
hydrothermal systems. New estimates for global hydrothermal
power output,...
2003-09-09 (iso8601)
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